CN102573129B - Multi-mode dual-standby terminal and method for operating the terminal - Google Patents

Abstract

The invention discloses a multi-mode dual-standby terminal and a method for operating the terminal. The main content includes: setting a set of switch-type front-end radio frequency devices in the mode supported by multiple wireless communication modules in the radio frequency part of the terminal, so that each wireless The communication module time-division multiplexes the front-end radio frequency device, while ensuring that each wireless communication module can reside in any of the modes it supports at the same time, avoiding the common support mode for each wireless communication module. A front-end radio frequency device is installed in the wireless communication module, which leads to the problems that the front-end radio frequency structure of the terminal occupies too much volume, increases the power consumption, and increases the hardware cost; at the same time, the application processor in the terminal controls the first wireless communication module and the second The wireless communication modules reside in different frequency bands of this mode, which reduces the mutual interference between the wireless communication modules.

Description

A multi-mode dual-standby terminal and a method for operating the terminal

technical field

The present invention relates to the communication field, in particular to a multi-mode dual-standby terminal and a method for operating the multi-mode dual-standby terminal.

Background technique

Long Term Evolution (LTE), as a subsequent evolution technology of 3G, is recognized by the industry as the evolution direction of the next generation of mobile communications due to its unique technical advantages such as high data rate, low latency, and flexible bandwidth configuration. Most of the current LTE terminals are data terminals such as data cards and customer premises equipment (CPE). Compared with the existing 3G terminals, the product category is relatively single, which cannot meet the diverse needs of users for LTE terminals. In addition, considering that LTE is a pure packet domain technology, how to support LTE terminals for voice services is also a hot research topic in the industry.

In order to provide a variety of terminals to solve the problem of LTE terminals supporting voice services, a multi-mode dual-standby terminal solution is proposed. On the one hand, the multi-mode dual-standby terminal can rely on the existing 2G network or 3G network circuit domain technology to provide users with voice, videophone, SMS, MMS and other circuit domain services; The packet domain of the 3G network provides users with various packet domain bearer services covering high speed, medium speed and low speed. The multi-mode dual-standby terminal not only solves the problem of LTE terminal supporting voice services, but also integrates the advantages of various networks to provide users with more flexible service usage and more diversified services.

At present, there are two types of standard TD-LTE chips, one is TD-LTE single-mode chip, the other is GSM/TD-LTE multi-mode chip, the multi-mode dual-standby terminal designed with TD-LTE chip can have The following two chip combination modes:

The first chip combination mode: TD-LTE single-mode chip + GSM/TD-SCDMA multi-mode chip.

In this chip combination mode, if there is no interoperability between the TD-LTE single-mode chip and the GSM/TD-SCDMA multi-mode chip, the multi-mode dual-standby terminal cannot guarantee the packet domain bearer service in the TD-LTE network Smoothly switch to GSM network or TD-SCDMA network. Under the existing network deployment, the coverage of the TD-LTE network is much smaller than that of the GSM network or TD-SCDMA network. Therefore, packet domain bearer services may often be handed over from the TD-LTE network to the GSM network or TD-SCDMA network. , if the handover continuity of the bearer service in the packet domain cannot be guaranteed, it will have a serious impact on the actual application of the multi-mode terminal due to poor user experience.

The second chip combination mode: GSM/TD-LTE multi-mode chip + GSM/TD-SCDMA multi-mode chip.

In this chip combination mode, even if there is no interoperability between the TD-LTE single-mode chip and the GSM/TD-SCDMA multi-mode chip, it can also realize the continuous switching of packet domain bearer services between the TD-LTE network and the GSM network sex.

If the interior of the existing multi-mode dual-standby terminal is designed according to the above-mentioned first chip combination mode or the second chip combination mode, two sets of independent wireless communication modules will be designed inside the multi-mode dual-standby terminal, and each wireless communication module The dual standby function is realized through the respective RF chips and RF front-ends. As shown in FIG. 1 , it is a schematic diagram of a hardware architecture of a multi-mode dual-standby terminal designed according to the above-mentioned second chip combination mode. The multi-mode dual-standby terminal has an application processor (Application Processor, AP), a keyboard, a display screen, a memory, and two sets of independent wireless communication modules. The wireless communication module 1 is a dual-mode single-standby module supporting GSM/TD-SCDMA, which can carry not only circuit domain services such as voice service, videophone service, short message service, and multimedia message service, but also packet domain bearer services; the wireless communication module 2. It supports GSM/TD-LTE dual-mode single-standby module, and only bears packet domain bearer services. The AP is used to coordinate the control of shared devices such as electroacoustic devices (such as earpieces and microphones) and human-computer interaction devices (such as screens and keyboards) by two sets of wireless communication modules.

The wireless communication module 1 includes a wireless communication platform 1 and a radio frequency front end module 1, the wireless communication platform 1 includes a baseband sub-module 1, a radio frequency chip 1 and a power management chip 1, and the radio frequency front end module 1 includes a single-pole 12-throw antenna/switch 1, receiving filter TS34, receiving filter TS39, receiving filter G2, receiving filter G3, receiving filter G5, receiving filter G8, power amplifier (PowerAmplifier, PA) 1, PA2, PA3 and low-pass filter ( Low-Pass Filter, LPF)1~LPF6, etc.

In the wireless communication module 1 of Fig. 1, the description for the hardware equipment and the frequency band of TD-SCDMA is as follows: TS34 represents the frequency band 34 of the TD-SCDMA network, TS39 represents the frequency band 39 of the TD-SCDMA network, and PA1 is used for TD-SCDMA The radio frequency transmission signals of frequency band 34 and frequency band 39 are used for power amplification operation, LPF1 and LPF2 are respectively used to suppress the interference caused by the second harmonic to the transmission signals on TD-SCDMA frequency band 34 and frequency band 39, the receiving filter 34 and the receiving filter 39 are used to filter out the interference signals of TD-SCDMA outside the frequency band 34 and frequency band 39, and the antenna/switch 1 is used to control the mutual conversion between different transmission and reception channels. The descriptions of GSM hardware devices and frequency bands are: G2, G3, G5 and G8 respectively represent frequency band 2, frequency band 3, frequency band 5 and frequency band 8 in GSM, and PA2 is used to transmit signals to the radio frequency of GSM frequency band 2 and frequency band 3 Perform power amplification operation, PA3 is used to perform power amplification operation on the RF transmission signals of GSM frequency band 5 and frequency band 8, LPF3~LPF6 are used to suppress the second harmonic to GSM frequency band 2, frequency band 3, frequency band 5 and frequency band 8 respectively The interference caused by the transmitted signal, the receiving filter G2, the receiving filter G3, the receiving filter G5 and the receiving filter G8 are used to filter out the interference signals outside the frequency band 2, frequency band 3, frequency band 5 and frequency band 8 of GSM respectively.

The wireless communication module 2 includes a wireless communication platform 2, a radio frequency front end module 2 and a radio frequency front end module 3, the wireless communication platform 2 includes a baseband sub-module 2, a radio frequency chip 2 and a power management chip 2, and the radio frequency front end module 2 includes a single pole 4-throw antenna/switch 2, receiving filter TL38, receiving filter TL40, receiving filter G2, receiving filter G3, receiving filter G5, receiving filter G8, PA4, PA2, PA3 and LPF3-LPF8, etc. The RF front-end terminal module 3 includes a single-pole 2-throw antenna/switch 3, a receiving filter TL38 and a receiving filter TL40.

In the wireless communication module 2 of Fig. 1, the description for the hardware equipment and the frequency band of TD-LTE is: TL38 and TL40 represent the frequency band 38 and frequency band 40 of TD-LTE respectively, PA4 is used for the frequency band 38 and frequency band 40 of TD-LTE The RF transmission signal is used for power amplification operation, LPF7 and LPF8 are used to suppress the interference caused by the second harmonic to the transmission signal on the LT-LTE frequency band 38 and frequency band 40 respectively, and the receiving filter TL38 and receiving filter TL40 are respectively used to filter In addition to the interference signals of TD-LTE in frequency band 38 and frequency band 40, considering that the TD-LTE system needs to be configured as a structure of 2 receiving and 1 transmitting, therefore, the wireless communication module 2 is connected between the RF front-end sub-module 2 and the RF front-end sub-module 3 CCP configures two sets of antennas/switches and two sets of receiving filter TL38 and receiving filter TL40. In the wireless communication module 2 in FIG. 1 , the description of the hardware devices and frequency bands for GSM is the same as that in the wireless communication module 1 .

In the radio frequency implementation scheme based on the multi-mode dual-terminal terminal described in Figure 1, the reselection/switching between GSM and TD-SCDMA in the wireless communication module 1 and the GSM and TD-SCDMA in the wireless communication module 2 can be realized at the same time Reselection/handover between, and the wireless communication module 1 can reside in GSM or TD-SCDMA, and the wireless communication module 2 can reside in GSM or TD-LTE, truly realizing multi-mode dual standby.

In the radio frequency implementation scheme shown in Figure 1, the dual standby of the multimode terminal is equivalent to the physical binding of the radio frequency implementation schemes of two multimode single standby terminals, that is, the radio frequency implementation scheme of GSM/TD-SCDMA multimode single standby and the The binding of GSM/TD-LTE multi-mode single-standby radio frequency implementation scheme, under this structure, even if the wireless communication platform 1 and the wireless communication platform 2 have the same GSM mode, it is necessary to design two sets of hardware devices for GSM respectively .

In combination with Figure 1, in the multi-mode dual-standby terminal, two sets of the same RF front-end devices (including the same receiving filter, The same PA, the same LPF), the volume and manufacturing cost of the hardware structure of the multi-mode dual-standby terminal are increased, and the power consumption of the multi-mode dual-standby terminal is significantly increased; in addition, under the structure shown in Figure 1 , wireless communication module 1 and wireless communication module 2 may reside in the same frequency band of GSM at the same time, resulting in increased interference between wireless communication module 1 and wireless communication module 2, which in turn makes the GSM receiver sensitivity of the interfered party serious If it deteriorates and cannot work normally, it will also increase the power consumption of the terminal.

To sum up, under the current radio frequency implementation of multi-mode dual-standby terminals, there is still a large interference between wireless communication modules when they reside in the same frequency band of the same network at the same time, and the radio frequency part of the multi-mode dual-standby terminal The volume occupied by the hardware structure and the problem of large power consumption.

Contents of the invention

Embodiments of the present invention provide a multi-mode dual-standby terminal and a method for operating the terminal, which are used to solve the problems in the prior art that the radio frequency part of the terminal occupies a large volume, consumes a large amount of power, and has large interference between wireless communication modules. .

A multi-mode dual-standby terminal, the terminal includes an application processor, and a first wireless communication module and a second wireless communication module supporting multi-mode single-standby, wherein:

The switch-type RF front-end device of the mode supported by the first wireless communication module and the second wireless communication module is arranged in the RF front-end sub-module of the first wireless communication module, and the first wireless communication platform and the second wireless communication platform in the first wireless communication module The second wireless communication platform in the second wireless communication module is respectively connected to the radio frequency front-end device;

The application processor is configured to control the first wireless communication platform and the second wireless communication platform to be different from those supported by the RF front-end device when both the first wireless communication module and the second wireless communication module need to reside in the mode. The interface of the frequency band is turned on.

A method for operating the multi-mode dual-standby terminal, the method comprising:

The application processor receives a camping request sent by the first wireless communication module requesting to camp in the mode;

The application processor determines whether the second wireless communication module needs to stay in this mode;

If the second wireless communication module does not need to reside in the mode, then control the first wireless communication module to reside in any frequency band of the mode;

Otherwise, control the first wireless communication module and the second wireless communication module to reside in different frequency bands of the mode.

In the embodiment of the present invention, a set of switch-type front-end radio frequency devices in a mode supported by multiple wireless communication modules is set in the radio frequency part of the terminal, so that each wireless communication module time-division multiplexes the front-end radio frequency device, ensuring that each wireless communication module is In the case of being able to reside in any mode supported by it at the same time, avoiding the common support mode of each wireless communication module, setting the front-end radio frequency device in each wireless communication module separately, resulting in the occupied volume of the front-end radio frequency structure of the terminal Too large, the problem of increased power consumption; at the same time, the application processor in the terminal controls the first wireless communication module and the second wireless communication module to reside in different frequency bands of this mode, reducing interference between wireless communication modules.

Description of drawings

FIG. 1 is a schematic diagram of a hardware architecture of a multi-mode dual-standby terminal in the background technology;

FIG. 2 is a schematic diagram of a multi-mode dual-standby terminal in Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of a hardware architecture of a multi-mode dual-standby terminal in Embodiment 2 of the present invention;

4 is a schematic diagram of a method for operating a multi-mode dual-standby terminal in Embodiment 3 of the present invention;

FIG. 5 is a schematic diagram of a method for operating a multi-mode dual-standby terminal in a scenario where the terminal is powered on and selects a network according to Embodiment 4 of the present invention;

FIG. 6 is a schematic diagram of a method for operating a multi-mode dual-standby terminal in a scenario of terminal reselection according to Embodiment 4 of the present invention.

Detailed ways

The embodiment of the present invention improves the front-end radio frequency structure of the existing multi-mode dual-standby terminal, and sets a set of switch-type front-end radio frequency devices in the mode supported by multiple wireless communication modules in the radio frequency part of the terminal, so that each wireless communication module time-division Multiplexing the same switch-type front-end radio frequency device, while ensuring that each wireless communication module can reside in any of the modes it supports at the same time, avoids the common support mode for each wireless communication module. A front-end radio frequency device is installed in the wireless communication module, which leads to the problem that the front-end radio frequency structure of the terminal occupies too much space and increases the power consumption; at the same time, the application processor in the terminal controls the first wireless communication module and the second wireless communication module. Staying in different frequency bands of this mode reduces interference between wireless communication modules.

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

The multi-mode dual-standby terminal involved in the various embodiments of the present invention refers to a terminal that has a first wireless communication module and a second wireless communication module that support multi-mode single-standby. The modes of retention are different, and the multi-mode dual-standby terminal can be in two different networks at the same time or in different frequency bands of the same network.

The modes supported by the wireless communication module involved in various embodiments of the present invention include but are not limited to current 2G, 3G and various evolved networks, such as: GSM, TD-SCDMA, WCDMA, CDMA2000, TD-LTE, FDD LTE, etc., wireless The communication module can support multiple modes, and switch and reselect among the supported modes, that is, it can reside in any supported mode.

Embodiment one:

As shown in FIG. 2 , it is a schematic diagram of a multi-mode dual-standby terminal in Embodiment 1 of the present invention, the terminal includes an application processor, and a first wireless communication module and a second wireless communication module supporting multi-mode single-standby, wherein : The switch-type RF front-end device of the mode supported by the first wireless communication module and the second wireless communication module is arranged in the RF front-end sub-module of the first wireless communication module, the first wireless communication platform and and the first wireless communication module in the first wireless communication module The second wireless communication platform in the second wireless communication module is respectively connected to the radio frequency front-end devices.

Since the first wireless communication module and the second wireless communication module are connected to the same switch-type RF front-end device on the RF path of the same frequency band in the common support mode, therefore, in order to avoid the first wireless communication module and the second wireless communication module from staying In the case of the same frequency band, when both the first wireless communication module and the second wireless communication module need to reside in the mode, the application processor is used to control the first wireless communication platform and the second wireless communication platform to communicate with the radio frequency front end respectively. Interfaces in the device that support different frequency bands are turned on, so that the first wireless communication module and the second wireless communication module reside in different frequency bands.

Considering that the wireless communication module carries circuit domain services such as voice, videophone, SMS, and MMS, as well as packet domain services, the application processor can select the network according to the priority level of the wireless communication module during terminal network selection and switching operations. to control the frequency band where each wireless communication module resides. In the solution of the first embodiment, considering that the circuit domain service is the basic service of the terminal, and the quality of the circuit domain service such as voice directly affects the user experience, therefore, the priority of the wireless communication module supporting the circuit domain service such as voice is defined It is higher than the wireless communication module that only supports packet domain bearer services.

The specific method is: the application processor determines the priorities of the first wireless communication module and the second wireless communication module according to the business types supported by the first wireless communication module and the second wireless communication module, and controls the wireless communication module with higher priority Stay in the required frequency band, control the wireless communication module with lower priority to stay in other frequency bands, that is to ensure that the communication business of the wireless communication module with high priority can be carried out smoothly, and avoid two sets of wireless communication modules. Under the same frequency band, there is a big problem of mutual interference.

Embodiment two:

In Embodiment 2 of the present invention, the first wireless communication module (hereinafter referred to as wireless communication module 1) is a multimode single-standby module supporting GSM/TD-SCDMA, and the second wireless communication module (hereinafter referred to as wireless communication module 2) Taking a multi-mode single-standby module supporting GSM/TD-LTE as an example, the solution of Embodiment 1 will be described.

As shown in Figure 3, it is a schematic diagram of the hardware structure of the terminal in the second embodiment of the present invention. Since the mode supported by the wireless communication module 1 and the second wireless communication module 2 in the first embodiment is GSM, the wireless communication module 1 and the wireless The communication module 2 shares the switch-type radio frequency front-end device of GSM.

Comparing the structures of Figure 1 and Figure 3, it can be seen that there is no GSM RF front-end device deployed in the RF front-end sub-module 2 of the wireless communication module 2, but a GSM switch type device is deployed in the RF front-end sub-module 1 of the wireless communication module 1. The radio frequency front-end device, the radio frequency chip 1 of the wireless communication module 1 and the radio frequency chip 2 of the wireless communication module 2 are respectively connected with the switch type radio frequency front end device of GSM, so that the wireless communication module 1 and the wireless communication module 2 share the same GSM switch type radio frequency front end device connected.

GSM's switch-type RF front-end devices include switch-type receive filters G2, G3, G5 and G8, switch-type power amplifiers PA2, PA3, and antenna/switches.

For the switch-type receiving filter G2, the radio frequency chip 1 and the radio frequency chip 2 are connected to different ports of the switch-type receiving filter G2 on the radio frequency channel of the same frequency band of GSM. When the wireless communication module 1 resides in the frequency band 2, the radio frequency chip 1 The interface with the switch-type receiving filter G2 is conducted, and the interface between the radio frequency chip 2 and the switch-type receiving filter G2 is not conducted; The interface of G2 is conducted, and the interface of the radio frequency chip 1 and the switch-type receiving filter G2 is not conducted. The connection relationship between the switch-type receiving filters G3, G5 and G8 and the radio frequency chip 1 and the radio-frequency chip 2 is the same as that of the switch-type receiving filter G2.

For the switch type PA2, the radio frequency chip 1 and the radio frequency chip 2 are connected to different ports of the switch type power amplifier PA2 on the radio frequency transmission channel of the same frequency band of GSM, and by controlling the switch of the PA2, the PA2 becomes the wireless communication module 1 or the wireless communication module 2 radio frequency transmission signal for power amplification operation. Assume that the switch-type PA2 is used to amplify the power of the radio frequency transmission signals of GSM frequency band 2 and frequency band 3, and the PA3 is used to perform power amplification operations of the radio frequency transmission signals of GSM frequency band 5 and frequency band 8, and the wireless communication module 1 resides In the frequency band 2 of GSM, the wireless communication module 2 resides in the frequency band 8, the interface between the radio frequency chip 1 and the switch type PA2 is turned on, and the interface between the radio frequency chip 2 and the switch type PA3 is turned on.

Since there is no need to deploy GSM RF front-end devices in the RF front-end terminal module 2 in FIG. 3 , the number of antennas/switches of the RF front-end terminal module 2 can be simplified from single-pole 12 throws to single-pole 4 throws. The hardware structure of the wireless communication platform 1 in the wireless communication module 1 has not changed, and the hardware structure of the wireless communication platform 2 in the wireless communication module 2 has not changed either. The RF front-end device for TD-SCDMA in the RF front-end sub-module 1 in the wireless communication module 1 has not changed, and the RF front-end device for TD-LTE in the RF front-end sub-module 2 in the wireless communication module 2 and the RF front-end sub-module 3 Nothing has changed either.

In the first embodiment, the output impedance and input impedance of the ports connected to the default switch-type receiving filter and RF chip 1 and RF chip 2 are matched, and the input impedance and output impedance of the ports connected to the switch-type power amplifier and RF chip 1 and RF chip 2 are matched. .

In the structure shown in Figure 3, if wireless communication module 1 and wireless communication module 2 need to reside in the same frequency band of GSM at the same time, since wireless communication module 1 supports circuit domain services such as voice, wireless communication module 2 only supports packet Domain bearer services, therefore, wireless communication module 1 has a higher priority than wireless communication module 2. According to the requirements of the wireless communication module 1, the application processor controls it to reside in the required frequency band, and makes the wireless communication module 2 reside in other covered frequency bands of GSM.

It should be noted that the solution of the first embodiment is not limited to the first communication module and the second communication module supporting other modes, such as the wireless communication module 1 supporting CDMA/TD-SCDMA, and the wireless communication module supporting CDMA/TD-LTE Module 2, etc., and the solution of the first embodiment is not limited to deploying the switch-type RF front-end device in the mode supported by the wireless communication module 1 and the second wireless communication module 2 inside the wireless communication module 1, and can also be deployed in the wireless communication module within module 2.

Embodiment three:

Embodiment 3 of the present invention provides a method for operating the multi-mode dual-standby terminal described in Embodiment 1. As shown in FIG. 4 , it is a schematic diagram of a method for operating a multi-mode dual-standby terminal in Embodiment 3 of the present invention. The method includes The following steps:

Step 101: The application processor receives a camping request sent by the first wireless communication module to request camping in a common support mode.

In the solution of this embodiment, the first wireless communication module may send a camping request to the application processor when starting up, selecting a network or switching, and the camping request carries the identification of the mode to which the camping is requested.

Step 102: the application processor judges whether the second wireless communication module needs to stay in this mode, if yes, execute step 103; otherwise, execute step 104.

The application processor first checks whether the mode represented by the received mode identifier is a mode supported by the first wireless communication module and the second wireless communication module, if not, controls the first wireless receiving module to reside in the requested mode; otherwise , and then perform the judgment operation in this step.

The way for the application processor to determine whether the second wireless communication module needs to reside in the mode includes:

The application processor checks whether the current second wireless communication module is in this mode, and if so, determines that the second wireless communication module needs to be in this mode; otherwise, the application processor detects whether the second wireless communication module needs to initiate For network selection or switching operation, if necessary, it is determined that the second wireless communication module needs to reside in this mode; otherwise, it is determined that the second wireless communication module does not need to reside in this mode.

Step 103: the application processor controls the second wireless communication module and the first wireless communication module to reside in different frequency bands of the mode, and ends.

Step 104: the application processor controls the first wireless communication module to camp in any frequency band of the mode, and ends.

In the solution of the third embodiment, in order to avoid interference between the first wireless communication module and the second wireless communication module, the application processor will control the two wireless communication modules to reside in different frequency bands.

Embodiment four:

Embodiment 4 of the present invention takes the wireless communication module 1 supporting GSM/TD-SCDMA and the wireless communication module 2 supporting GSM/TD-LTE in Embodiment 2 as examples, and describes the solution of Embodiment 3 of the present invention in conjunction with FIG. 2 . In the fourth embodiment, the scenario of network selection when the terminal is powered on, the scenario of terminal reselection, and the scenario of terminal switching are used as examples for illustration.

1. The terminal starts the network selection scene.

In the power-on scenario, the wireless communication module 1 and the wireless communication module 2 will select a network to reside in according to a preset method. For example: the preset mode for wireless communication module 1 is: only select TD-SCDMA, only select GSM, preferred TD-SCDMA, preferred GSM or automatic selection, etc.; the preset mode for wireless communication module 1 is: preferred TD -LTE.

After the terminal is turned on, if the environment where the terminal is located does not have TD-LTE network coverage, but has GSM and TD-SCDMA network coverage, and since the priority of wireless communication module 1 is higher than that of wireless communication module 2, wireless communication Module 2 needs to select the frequency band it can camp on according to the network and frequency band where the wireless communication module 1 resides.

As shown in Figure 5, the process of the application processor controlling the wireless communication module 1 and the wireless communication module 2 to reside in the corresponding network and frequency band includes the following steps:

Step 201: The wireless communication module 2 initiates a camping request to the application processor to camp on frequency band 3 of GSM.

Step 202: The application processor judges whether a camping request from the wireless communication module 1 requesting to camp in GSM is received, and if so, executes step 203; otherwise, executes step 206.

The purpose of this step is to judge whether the wireless communication module 1 needs to reside in GSM. Since the priority of the wireless communication module 1 is higher than that of the wireless communication module 2, if the wireless communication module 1 needs to reside in GSM, the wireless The communication module 1 preferentially resides in the required frequency band.

Step 203: The application processor judges whether the frequency band requested by the wireless communication module 1 to camp is the frequency band 3, and if so, executes step 204; otherwise, executes step 206.

Step 204: The application processor controls the wireless communication module 1 to camp on the frequency band 3 of GSM.

The specific process of this step is:

First, the application processor sends the information of the frequency band 3 to the baseband sub-module 1;

Then, the baseband sub-module 1 sends the received frequency band 3 information to the radio frequency chip 1 .

Finally, the radio frequency chip 1 is connected to the interface of the switch-type receiving filter and the interface of the switch-type power amplifier in the frequency band 3 of the radio frequency front-end device.

Step 205: the application processor controls the wireless communication module 2 to camp on other frequency bands of GSM, and ends.

The specific process of this step is:

First, the application processor sends information about frequency bands 2, 5, and 8 that can reside in the baseband sub-module 2;

Then, the baseband submodule 2 selects the information of the received frequency bands 2, 5, and 8 according to preset criteria, determines the frequency band where GSM in the baseband submodule 2 currently needs to reside, and sends the frequency band information to the radio frequency Chip 2; if the baseband sub-module 2 finds that there is no frequency band to reside in in the current state, it will not send any frequency band information to the radio frequency chip 2.

Next, the radio frequency chip 2 opens its corresponding receiving/transmitting channel according to the frequency band information received from the baseband sub-module 2, and conducts with the interface of the switch-type receiving filter and the interface of the switch-type power amplifier corresponding to the frequency band. For example: if the baseband sub-module 2 requires to reside in the frequency band 8 of GSM, the receiving channel and the transmitting channel of the frequency band 8 in the radio frequency chip 2 are respectively connected to the interface of the switch-type receiving filter and the interface of the switch-type power amplifier of the frequency band 8 ; If the baseband chip 2 does not send any frequency band information to the radio frequency chip 2, then the radio frequency chip 2 cannot be connected with the interface of the switch-type receiving filter of frequency bands 2, 5, 8 and the interface of the switch-type power amplifier, and now the wireless communication module 2 cannot reside to GSM.

Step 206: The application processor controls the wireless communication module 2 to camp on the frequency band 3 of the GSM network.

2. The terminal reselects the scene.

In the terminal reselection scenario, as long as the area where the terminal is located has TD-LTE network coverage, the wireless communication module 2 will reselect to the TD-LTE network, and the wireless communication module 1 still selects the network according to the method defined in the terminal power-on network selection scenario.

There are two possible situations in the terminal reselection scenario. The first situation is that when the wireless communication module 2 resides in GSM, the wireless communication module 1 also needs to reside in GSM; the second situation is that the wireless communication module 2 The wireless communication module 1 does not need to reside in GSM before the GSM frequency band 3, but after the wireless communication module 2 resides in the GSM frequency band 3, the wireless communication module 1 needs to reside in the GSM again. The two cases are explained separately:

First case:

(1) If the wireless communication module 1 resides in the TD-SCDMA network after the terminal is turned on, and the wireless communication module 2 resides in the TD-LTE network, when the terminal moves to an area covered by only the GSM network, the wireless communication module 1 will take priority In the wireless communication module 2, select the frequency band where GSM resides.

As shown in Figure 6, the process of the application processor controlling the wireless communication module 1 and the wireless communication module 2 to reside in the corresponding network and frequency band includes the following steps:

Step 301: The wireless communication module 2 initiates a camping request to the application processor to camp on frequency band 3 of GSM.

Step 302: The application processor judges whether the interface between the switch-type receiving filter and the switch-type power amplifier of GSM has been turned on, and if so, executes step 303; otherwise, executes step 305.

In the structure shown in Figure 3, the wireless communication module 1 is connected to the interfaces of all switch-type receiving filters and switch-type power amplifiers of GSM. If the wireless communication module 1 resides in a certain frequency band of GSM, the radio frequency chip 1 The interface with the switch-type receiving filter and switch-type power amplifier of this frequency band will be conducted; if the wireless communication module 1 does not reside in GSM, then the interfaces of all switch-type receive filters and switch-type power amplifiers of GSM should be in non-conductive state.

Step 303: The application processor determines whether the interface of the switching filter G3 and the switching power amplifier of frequency band 3 is connected, and if so, executes step 304; otherwise, executes step 305.

The purpose of this step is to judge whether the wireless communication module 1 resides in the frequency band 3. If the wireless communication module 1 has resided in the frequency band 3, the wireless communication module 2 can only reside in other frequency bands; if the wireless communication module 1 does not reside in the In the frequency band 3, it means that the wireless communication module 1 does not need to reside in the frequency band 3, and the wireless communication module 2 can reside in the frequency band 3.

Step 304: the application processor controls the wireless communication module 2 to camp on other GSM frequency bands.

Step 305: the application processor controls the wireless communication module 2 to camp on the frequency band 3 of the GSM network.

In the scheme of step 304 and step 305, after the radio frequency chip 2 determines the frequency band to reside, it will report to the network side, and the network side will determine whether to allow the wireless communication module 2 to reside in the corresponding GSM frequency band according to the system resources. If agreed, then Execute step 304 or step 305; otherwise, the wireless communication module 2 cannot camp on GSM.

(2) If both the wireless communication module 1 and the wireless communication module 2 reside in GSM after the terminal is turned on, the wireless communication module 1 resides in the frequency band 5, and the wireless communication module 2 resides in the frequency band 3. When the terminal moves to another area only covered by the GSM network, when the signal of the frequency band 5 is weak, the reselection will be performed, and the application processor judges whether the reselected frequency band of the wireless communication module 1 is the frequency band 3, and if so, controls the wireless The communication module 2 reselects to another frequency band (such as frequency band 8), and controls the wireless communication module 1 to reselect to the frequency band 3; otherwise, the application processor controls the wireless communication module 1 to reselect to the required frequency band.

Second case:

If the wireless communication module 1 resides in the TD-SCDMA network after the terminal is powered on, and the wireless communication module 2 resides in the frequency band 3 of the GSM network, when the terminal moves to an area covered by only the GSM network, if the wireless communication module needs to reside in the frequency band 3. The application processor controls the wireless communication module 2 to reselect to another frequency band of GSM (such as frequency band 8), so that the wireless communication module 1 resides in the frequency band 3 of GSM.

3. The terminal switches the scene.

The terminal switching scenario is similar to the terminal reselection scenario. As long as the area where the terminal is located is covered by the TD-LTE network, the wireless communication module 2 will switch to the TD-LTE network, and the wireless communication module 1 will still execute in the manner defined by the common dual-mode single-standby terminal switch.

After the terminal is turned on, when the wireless communication module 2 establishes a data service connection under the TD-LTE network, when the terminal moves to an area not covered by the TD-LTE network but covered by the GSM network, the wireless communication module 2 will 1 The current network and frequency band where it resides decides whether to switch to GSM, and the specific process is similar to the terminal reselection scenario.

In various scenarios of Embodiment 4, if the GSM network coverage frequency band is dual-band or multi-band, for example: covering frequency band 3 and frequency band 8, then when the wireless communication module 1 resides in the frequency band 3, the wireless communication module 2 can Stay in frequency band 8, until wireless communication module 1 is turned off or reselected/switched to the TD-SCDMA network, wireless communication module 2 will have the opportunity to reselect/switch to frequency band 3 according to the strength of the network signal. If the frequency band covered by the GSM network is a single frequency band, for example: covering frequency band 3, then when wireless communication module 1 resides in frequency band 3, wireless communication module 2 cannot reside in GSM until wireless communication module 1 is turned off or reselected/switched After connecting to the TD-SCDMA network, the wireless communication module 2 has the opportunity to reselect/switch to GSM frequency band 3 according to the strength of the network signal.

Through the multi-mode dual-standby terminal provided by the embodiment of the present invention and the operation method of the terminal, the number of components and the layout area in the terminal can be effectively reduced, and the volume and power consumption of the terminal can be significantly reduced. Taking the situation shown in Figure 3 as an example, a single-pole, double-throw switch-type receiving filter is used to time-multiplex a receiving filter in the radio frequency receiving channels of the same frequency band of GSM in two wireless communication platforms. A switch-type PA with single-pole double-throw, which enables time-division multiplexing of a PA and LPF in the radio frequency transmission channels of the same frequency band of GSM in two wireless communication platforms, using a switch-type receive filter and PA with single-pole double-throw, Make the RF receiving/transmitting channels of the same GSM frequency band in the two wireless communication platforms time-division multiplex the same antenna/switch, use the application processor to jointly control the two wireless communication platforms to work at the same time, open the corresponding receiving and receiving channels and switches of different frequency bands Type receiving filter, switch type PA, LPF and other RF front-end devices, so as to ensure that the two wireless communication platforms can work in GSM at the same time, save 4 receiving filters and 4 PAs in hardware, and can also integrate the RF front-end The antenna/switch structure in module 2 is simplified from single-pole 12-throw to single-pole 4-throw. In addition, when two sets of wireless communication modules want to reside in the same mode at the same time, the application processor coordinates the order in which the two wireless communication modules occupy the same mode of RF front-end devices based on the priority of the business carried by each module, so that the two sets of wireless When the communication modules reside in the same mode, avoid interference caused by reside in the same frequency band.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (7)

1. A multi-mode dual-standby terminal, characterized in that the terminal includes an application processor, and a first wireless communication module and a second wireless communication module supporting multi-mode single-standby, wherein: The switch-type RF front-end device of the mode supported by the first wireless communication module and the second wireless communication module is arranged in the RF front-end sub-module of the first wireless communication module, and the first wireless communication platform and the second wireless communication platform in the first wireless communication module The second wireless communication platform in the wireless communication module is respectively connected to the radio frequency front-end device; The application processor is configured to control the first wireless communication platform and the second wireless communication platform to be different from those supported by the RF front-end device when both the first wireless communication module and the second wireless communication module need to reside in the mode. The interface of the frequency band is turned on; Wherein, the switch-type radio frequency front-end device includes a switch-type receiving filter and a switch-type power amplifier; the wireless communication platform includes a baseband sub-module and a radio frequency chip; The application processor is specifically configured to send frequency band information to the baseband submodule of the first wireless communication platform and the baseband submodule of the second wireless communication platform respectively; The baseband sub-module is used to send the received frequency band information to the radio frequency chip located on the same wireless communication platform; The radio frequency chip is used to open the receiving/transmitting channel of the corresponding frequency band according to the received frequency band information, and conduct with the interface of the receiving filter and the interface of the power amplifier supporting the frequency band in the radio frequency front-end device. 2. The multi-mode dual-standby terminal according to claim 1, characterized in that, The application processor is specifically configured to determine the priority of the first wireless communication module and the second wireless communication module according to the service types supported by the first wireless communication module and the second wireless communication module, and send the priority to the wireless communication module with higher priority The baseband submodule sends the frequency band information of the frequency band that the wireless communication module needs to camp on, and sends the frequency band information of at least one frequency band in the remaining covered frequency bands to the baseband submodule of the wireless communication module with a lower priority. 3. A method for operating the multi-mode dual-standby terminal according to claim 1, characterized in that the method comprises: The application processor receives a camping request sent by the first wireless communication module requesting to camp in the mode; The application processor determines whether the second wireless communication module needs to stay in this mode; If the second wireless communication module does not need to reside in the mode, then control the first wireless communication module to reside in any frequency band of the mode; Otherwise, control the first wireless communication module and the second wireless communication module to reside in different frequency bands of the mode; Wherein, the application processor controls the first wireless communication module and the second wireless communication module to reside in different frequency bands of this mode, specifically including: The application processor sends frequency band information to the baseband submodule of the first wireless communication platform and the baseband submodule of the second wireless communication platform; The baseband sub-module sends the received frequency band information to the radio frequency chip located on the same wireless communication platform; The radio frequency chip opens the receiving/transmitting channel of the corresponding frequency band according to the received frequency band information, and conducts with the interface of the receiving filter and the interface of the power amplifier of the frequency band in the radio frequency front-end device. 4. The method according to claim 3, wherein the application processor sends frequency band information to the baseband submodule of the first wireless communication platform and the baseband submodule of the second wireless communication platform, specifically comprising: The application processor determines the priorities of the first wireless communication module and the second wireless communication module according to the types of services supported by the first wireless communication module and the second wireless communication module; The application processor determines a frequency band where a wireless communication module with a higher priority needs to reside, and selects a frequency band for a wireless communication module with a lower priority to reside from the remaining covered frequency bands; The application processor sends the frequency band information of the determined frequency band to the corresponding baseband sub-module. 5. The method of claim 4, wherein, The priority of the wireless communication module supporting the circuit domain service is higher than that of the wireless communication module only supporting the packet domain bearer service. 6. The method according to claim 4, wherein if the first wireless communication module does not need to reside in the mode before the second wireless communication module resides in the frequency band of the mode, but in the second wireless communication After the module resides in the frequency band of this mode, the first wireless communication module needs to reside in this mode again, and the priority of the first wireless communication module is higher than that of the second wireless communication module, then the method further includes: When the application processor determines that the first wireless communication module needs to reside in the frequency band where the second wireless communication module resides, it controls the second wireless communication module to reselect to other frequency bands covered by the mode, and controls the first wireless communication module to Dwell to the desired frequency band. 7. The method according to claim 4, wherein if the covered frequency band of the mode is a single frequency band, and the priority of the first wireless communication module is higher than that of the second wireless communication module, the application processor controls the first wireless communication module to The communication module resides in the covered frequency band of the mode, and controls the second wireless communication module to reside in the covered frequency band of the mode when the first wireless communication module does not reside in the frequency band.